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Cu

COPPER

(Latin, cuprum, from the island of Cyprus)

Cu at. wt. 63.54
   at. no. 29
   m.p. 1083.0 ± 0.10°C
   b.p. 2595°C 
   sp. gr. 8.96 (20°C)
   valence 1, or 2.

**Electronic configuration**
SHELL	K	L	M	N	O	P	Q
SUB SHELL	He	Neon	Argon	Krypton	Xenon	Radon	Eka-radon
SUB SHELL	1s	2s 2p	3s 3p	3d 4s 4p	4d 5s 5p	4f 5d 6s 6p	5f 6d 7s 7p
Copper	1s²2s²2p⁶3s²3p⁶3d¹⁰4s¹
Symbol	²s_½

COPPER was discoverd in prehistoric times, and is said to have been mined for more than 5000 years. It is one of man's most important metals. Copper is reddish-colored, takes on a bright metallic luster and is malleable, ductile, and a good conductor of heat and electricity (second only to silver in electrical con ductivity). The electrical industry is one of the greatest users of copper. Copper occasionally occurs native, and is found in many minerals, such as cuprite, malachite, azurite, chalcopyrite, and bornite. Large copper ore deposits are found in the U.S., Chile, Zambia, Congo, Peru, and Rhodesia. The most importarit copper ores are the sulfides, oxides, and carbonates. From these copper is obtained by smelting, leaching and by electrolysis. Its alloys, brass and bronze, long used, are still very important; all American coins are now copper alloys; monel and gun metals also contain copper. The most important compounds are the oxide and the sulfate, blue vituol; the latter has wide use as an agricultural poison and as an algicide in water purifica- tion. Copper compounds are widely used in analytical chemistry, such as Fehung's solution in tests for sugar. High-purity copper (99.999 + %) is available,commercially.

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Cu

COPPER

(Latin, cuprum, from the island of Cyprus)

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